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[Chemical Knowledge]：The production and manufacturing method and process of low-shun rubber.

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The manufacturing method
of low-compliance rubber
1. Introduction

Low-compliance rubber is an important chemical production raw material, widely used in rubber products such as tires, hoses, tapes, etc. Because of its excellent wear resistance, crack resistance and oil resistance, it has attracted much attention. This paper will introduce the manufacturing method of low-shun rubber, including raw material selection, mixing, vulcanization and other process steps, in order to provide reference for the field of chemical production.

2. raw material selection

1. Natural rubber: Choose high-quality natural rubber as the main material, which has good elasticity, strength and wear resistance.
2. cis-polybutadiene rubber: add the right amount of cis-polybutadiene rubber to improve the low temperature performance and flexibility resistance of low-cis rubber.
3. carbon black: as a reinforcing agent, improve the strength and hardness of rubber.
4. Petroleum resin: Increase the viscosity and oil resistance of rubber.
5. accelerator, antioxidant, etc.: improve the processing performance and aging resistance of rubber.

3. mixing process

1. Mixer mixing: natural rubber, butadiene rubber, carbon black, petroleum resin and other raw materials into the mixer, high temperature, high pressure mixing, so that the raw materials fully and evenly mixed.
2. Mixing in open mixer: Put the compound after mixing in the internal mixer into the open mixer, add additives such as accelerator and antioxidant, and continue mixing until it is uniform.

4. vulcanization process

1. Mold preparation: prepare the corresponding vulcanization mold according to product requirements.
2. Rubber cutting: cut the mixed rubber into the shape and size suitable for the mold.
3. Vulcanization: The cut rubber material is put into the mold, and vulcanized at high temperature and high pressure in the vulcanizer, so that the rubber material is crosslinked to form a rubber product with a three-dimensional network structure.

5. Precautions

1. Mixing process should pay attention to control the temperature and time, to avoid overheating or long time lead to performance degradation.
2. During the vulcanization process, it is necessary to ensure that the mold is clean to avoid impurities affecting product quality. At the same time, the vulcanization temperature and time should be controlled to ensure the performance and service life of the product.
3. In the production process, attention should also be paid to safety to avoid accidental injuries caused by improper operation.

6. conclusion

low-compliance rubber manufacturing method involves raw material selection, mixing process and vulcanization process and other links, each link has an important impact on the performance and service life of the final product. Therefore, it is necessary to strictly control the process parameters in the production process to ensure product quality. At the same time, continuously optimizing the production process, improving production efficiency, and reducing costs are also important development directions in the field of low-compliance rubber manufacturing in the future. It is hoped that the introduction of this paper can provide useful reference and enlightenment for the field of chemical production.

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